Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
v4 hook · Robinhood Chain · block 93,456,814
0xD849…a0cC
The eight checks
1 pool use this hook, the first one 21 h ago.
- 01caution
Permissions that touch your moneyThe address enables before swap returns delta, after swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
- 02n/a
What it takes from a swapNo pool with liquidity to swap through yet.
- 03pass
LPs can get outLiquidity added and removed in the same block came back whole.
- 04pass
The fee is the feeA fixed fee of 0%, written in the pool key.
- 05caution
No one holds the switchNo owner() but it has transferFrom, transfer, transferOwnership.
- 06pass
The code cannot changeNot a proxy, no DELEGATECALL, no SELFDESTRUCT.
- 07pass
Only the PoolManager can call itEach callback refused a call that did not come from the PoolManager.
- 08caution
Track record1 pool, first seen 0 days ago.
Measured at block 93,456,814. A hook with an owner or a dynamic fee can behave differently later; scan again before a large trade.
What the address allows
A v4 hook's permissions are the last fourteen bits of its address. The PoolManager calls only what they switch on.
address & 0x3fff0x20cc · 10000011001100
- bit 13Before initialize
- bit 12After initialize
- bit 11Before add liquidity
- bit 10After add liquidity
- bit 9Before remove liquidity
- bit 8After remove liquidity
- bit 7Before swap
- bit 6After swap
- bit 5Before donate
What it did to a real swap
A small swap each way and a liquidity round trip, run through the PoolManager and this hook inside a call that is never sent. The pool fee is expected; anything else missing is the hook.
ETH / test
fee 0%- Swap ETH → testno liquidity at the current price
- Swap test → ETHno liquidity at the current price
- Add, then remove liquiditycame back whole
pool 0x77bbaa71c8852f62d3c7698a3f5bcd83000cb0d713a13faf9daaa3d456b7bf10
Read from the bytecode
- Code size
- 8,098 bytes
- Owner
- none found
- Proxy
- no
- DELEGATECALL
- absent
- SELFDESTRUCT
- absent
- Outside calls
- 4
- Callbacks open to anyone
- none
Its functions, uncensored
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.
- 0x02a1f4d3 HOME_TICK_SPACING
- 0x03ee438c metadataURI
- 0x06fdde03 name
- 0x095ea7b3 approve
- 0x0be4fac7 POCKET_FOLD
- 0x0d62b7a2 RUN
- 0x16b8cddd circle
- 0x18160ddd
bit 4
After donate
bit 3Before swap returns deltabit 2After swap returns deltabit 1After add returns deltabit 0After remove returns delta- Before initialize. Runs once, when a pool is created.
- Before swap. Runs before every swap. On a dynamic-fee pool it can set the fee each time.
- After swap. Runs after every swap.
- Before swap returns delta. Can take part of what you put into a swap, or change how much is swapped.
- After swap returns delta. Can take part of what you get out of every swap.
totalSupply
0x21d0ee70 beforeRemoveLiquidity0x23b872dd transferFrom0x25241f84 POCKET_ORIGIN0x259982e5 beforeAddLiquidity0x26e93f5c POCKET_COMMONS0x2d18b393 levyCollected0x30aa1c1c LEVY_MIN_BPS0x313ce567 decimals0x37c54846 crease0x4c42f486 pockets0x575e24b4 beforeSwap0x57f26561 seated0x6c2bbe7e afterRemoveLiquidity0x6e0a49b7 holderOf0x6fe7e6eb afterInitialize0x70a08231 balanceOf0x715018a6 renounceOwnership0x8da5cb5b owner0x91dd7346 unlockCallback0x938b5f32 origin0x95d89b41 symbol0x988bbb0f creditsBps0x9f063efc afterAddLiquidity0x9fa92f9d home0xa3a3e590 levyDrawn0xa9059cbb transfer0xb47b2fb1 afterSwap0xb6a8b0fa beforeDonate0xb91e539c pocket0xc4e833ce getHookPermissions0xd8f78cda draw0xdc4c90d3 poolManager0xdc98354e beforeInitialize0xdd62ed3e allowance0xe1b4af69 afterDonate0xe684f46a fold0xe88e7383 levyBps0xf2fde38b transferOwnership0xfb72f6d3 commons0xfe150008 POCKET_CIRCLE